Telegraphy.



No. 833,226. PATENTED 00T. 16, 1906.

I. KITSEE.

TELEGRAPH'Y. PPLIOATION FILED JUNI: 6.1906.

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UNITED STATES PATENT OFFICE.

ISIDOR KITSEE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- HALF, TO WILLIAM J. LATTA, OF PHILADELPHIA, PENNSYLVANIA.v

TELEGRAPHY.

Specification of Letters Patent.

Patented Oct. 16, 1906.

graph with reversals with the aid of a centralized source of current.

In the drawings, Figure l is a diagrammatic view illustrating an all-metallic circuit embodying my invention. Fig. 2 is a diagrammatic view of a circuit in modied form.

1 and 2 are the legs of the circuit.

3 represents receiving devices, such as polarized relays.

4 and 5 are the two'parts of a common transmitting-key. One part, here shown as the lever 4, is connected, through wire 6, with the leg 2. The other part, here shown as the stationary point 5, is connected, through wire 7, with the ground.

The source of current is illustrated as two sets of batteries connected in opposition as to each other, one set of said batteries (designated by 9) consisting of a larger number of cells and the second set designated by 10.

In the drawings the set 9 consists of four cells,

and the set 10 of two cells. At the juncture of the cells the same are grounded, through wire 1l, at 8.

The operation of the system is as follows: Normally-that is, when the line is not in use-all the keys being open, the current will iow from the source of higher electromotive force in the direction of the unfeathered arrow; but when the operator transmits messages he operateshis key in the same manner as the Morse operatorthat is, he opens and closes his key. Through the closing of the key a shunt is established around the battery 9, and the force of the battery l0 flowing in the direction of the feathered arrow will prevail. Through the opening and closing of this key impulses are sent over theline alternately of opposite directions, and polarized receiving devices are then actuated thereby. In some cases it is necessary to guar-d against a break in the circuit. With the arrangement as in Fig. l as soon as the circuit is broken that part which is out of contact with batteries 9 and 10 cannot be worked at all. I therefore designed the arrangement as illustrated in Fig. 2. With this system if the circuit is cut each part may work independentlyl long enough to notify proper officers of the defect.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In telegraphy, an all-metallic line, its central battery of two sets connected in opposition as to each other and grounded at their juncture, a series of receiving devices inserted in one leg of said line and a series of transmitting devices connected to the second leg of said line, partof said transmitting devices grounded.

2. In telegraphy, an all-metallic line, aA

centralized source of current comprising two sets connected 1n oppositi on as to each other, one set of greater electromotive force than the other and grounded at their juncture,A

said source'connected in series as to said line means to receive impulses distributed along one leg of said line and means to connect the other leg to the ground in accordance with the characters to be transmitted.

8. In combination with a telegraphic circuit, two central batteries connected in opposition as to each other, a series of stations for said circuit and means for each station to short-circuit one of said batteries.

In testimony whereof I aHiX my signature in presence of two witnesses. y

ISIDOR KITSEE.

Witnesses:

MARY C. SMITH, ALvAr-I RITTENHOUSE. 

